ref: e244a5eb912509325f9fc1434b587572c699e76c
dir: /codec/encoder/core/inc/rc.h/
/*!
* \copy
* Copyright (c) 2004-2013, Cisco Systems
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*
* ratectl.c
*
* Abstract
* Include file for ratectl.c
*
* History
* 9/8/2004 Created
* 12/26/2011 Modified
*
*
*************************************************************************/
#ifndef RC_H
#define RC_H
#include "codec_app_def.h"
#include "svc_enc_macroblock.h"
#include "slice.h"
namespace WelsEnc {
typedef struct TagWelsEncCtx sWelsEncCtx;
//trace
#define GOM_TRACE_FLAG 0
#define GOM_H_SCC 8
enum {
BITS_NORMAL,
BITS_LIMITED,
BITS_EXCEEDED
};
enum {
//virtual gop size
VGOP_SIZE = 8,
//qp information
GOM_MIN_QP_MODE = 12,
GOM_MAX_QP_MODE = 36,
MAX_LOW_BR_QP = 42,
MIN_IDR_QP = 26,
MAX_IDR_QP = 32,
MIN_SCREEN_QP = 26,
MAX_SCREEN_QP = 35,
DELTA_QP = 2,
DELTA_QP_BGD_THD = 3,
QP_MIN_VALUE = 0,
QP_MAX_VALUE = 51,
//frame skip constants
SKIP_QP_90P = 24,
SKIP_QP_180P = 24,
SKIP_QP_360P = 31,
SKIP_QP_720P = 31,
LAST_FRAME_QP_RANGE_UPPER_MODE0 = 3,
LAST_FRAME_QP_RANGE_LOWER_MODE0 = 2,
LAST_FRAME_QP_RANGE_UPPER_MODE1 = 5,
LAST_FRAME_QP_RANGE_LOWER_MODE1 = 3,
MB_WIDTH_THRESHOLD_90P = 15,
MB_WIDTH_THRESHOLD_180P = 30,
MB_WIDTH_THRESHOLD_360P = 60,
//Mode 0 parameter
GOM_ROW_MODE0_90P = 2,
GOM_ROW_MODE0_180P = 2,
GOM_ROW_MODE0_360P = 4,
GOM_ROW_MODE0_720P = 4,
QP_RANGE_MODE0 = 3,
//Mode 1 parameter
GOM_ROW_MODE1_90P = 1,
GOM_ROW_MODE1_180P = 1,
GOM_ROW_MODE1_360P = 2,
GOM_ROW_MODE1_720P = 2,
QP_RANGE_UPPER_MODE1 = 9,
QP_RANGE_LOWER_MODE1 = 4,
QP_RANGE_INTRA_MODE1 = 3
};
//bits allocation
#define MAX_BITS_VARY_PERCENTAGE 100 //bits vary range in percentage
#define MAX_BITS_VARY_PERCENTAGE_x3d2 150 //bits vary range in percentage * 3/2
#define INT_MULTIPLY 100 // use to multiply in Double to Int Conversion, should be same as AQ_QSTEP_INT_MULTIPLY in WelsVP
#define WEIGHT_MULTIPLY 2000
#define REMAIN_BITS_TH (1)
#define VGOP_BITS_PERCENTAGE_DIFF 5
#define IDR_BITRATE_RATIO 4
#define FRAME_iTargetBits_VARY_RANGE 50 // *INT_MULTIPLY
//R-Q Model
#define LINEAR_MODEL_DECAY_FACTOR 80 // *INT_MULTIPLY
#define FRAME_CMPLX_RATIO_RANGE 20 // *INT_MULTIPLY
#define SMOOTH_FACTOR_MIN_VALUE 2 // *INT_MULTIPLY
//#define VGOP_BITS_MIN_RATIO 0.8
//skip and padding
#define TIME_CHECK_WINDOW 5000 // ms
#define SKIP_RATIO 50 // *INT_MULTIPLY
#define LAST_FRAME_PREDICT_WEIGHT 0.5
#define PADDING_BUFFER_RATIO 50 // *INT_MULTIPLY
#define PADDING_THRESHOLD 5 //*INT_MULTIPLY
#define VIRTUAL_BUFFER_LOW_TH 120 //*INT_MULTIPLY
#define VIRTUAL_BUFFER_HIGH_TH 180 //*INT_MULTIPLY
#define _BITS_RANGE 0
enum {
EVEN_TIME_WINDOW =0,
ODD_TIME_WINDOW =1,
TIME_WINDOW_TOTAL =2
};
typedef struct TagRCTemporal {
int32_t iMinBitsTl;
int32_t iMaxBitsTl;
int32_t iTlayerWeight;
int32_t iGopBitsDq;
//P frame level R-Q Model
int64_t iLinearCmplx; // *INT_MULTIPLY
int32_t iPFrameNum;
int64_t iFrameCmplxMean;
int32_t iMaxQp;
int32_t iMinQp;
} SRCTemporal;
typedef struct TagWelsRc {
int32_t iRcVaryPercentage;
int32_t iRcVaryRatio;
int32_t iInitialQp; //initial qp
int64_t iBitRate; // Note: although the max bit rate is 240000*1200 which can be represented by int32, but there are many multipler of this iBitRate in the calculation of RC, so use int64 to avoid type conversion at all such places
int32_t iPreviousBitrate;
int32_t iPreviousGopSize;
double fFrameRate;
int32_t iBitsPerFrame;
int32_t iMaxBitsPerFrame;
double dPreviousFps;
// bits allocation and status
int32_t iRemainingBits;
int32_t iBitsPerMb;
int32_t iTargetBits;
int32_t iCurrentBitsLevel;//0:normal; 1:limited; 2:exceeded.
int32_t iIdrNum;
int64_t iIntraComplexity; //255*255(MaxMbSAD)*36864(MaxFS) make the highest bit of 32-bit integer 1
int32_t iIntraMbCount;
int64_t iIntraComplxMean;
int8_t iTlOfFrames[VGOP_SIZE];
int32_t iRemainingWeights;
int32_t iFrameDqBits;
bool bGomRC;
double* pGomComplexity;
int32_t* pGomForegroundBlockNum;
int32_t* pCurrentFrameGomSad;
int32_t* pGomCost;
int32_t bEnableGomQp;
int32_t iAverageFrameQp;
int32_t iMinFrameQp;
int32_t iMaxFrameQp;
int32_t iNumberMbFrame;
int32_t iNumberMbGom;
int32_t iGomSize;
int32_t iSkipFrameNum;
int32_t iFrameCodedInVGop;
int32_t iSkipFrameInVGop;
int32_t iGopNumberInVGop;
int32_t iGopIndexInVGop;
int32_t iSkipQpValue;
int32_t iQpRangeUpperInFrame;
int32_t iQpRangeLowerInFrame;
int32_t iMinQp;
int32_t iMaxQp;
//int32_t delta_adaptive_qp;
int32_t iSkipBufferRatio;
int32_t iQStep; // *INT_MULTIPLY
int32_t iFrameDeltaQpUpper;
int32_t iFrameDeltaQpLower;
int32_t iLastCalculatedQScale;
//for skip frame and padding
int32_t iBufferSizeSkip;
int64_t iBufferFullnessSkip;
int64_t iBufferMaxBRFullness[TIME_WINDOW_TOTAL];//0: EVEN_TIME_WINDOW; 1: ODD_TIME_WINDOW
int32_t iPredFrameBit;
bool bNeedShiftWindowCheck[TIME_WINDOW_TOTAL];
int32_t iBufferSizePadding;
int32_t iBufferFullnessPadding;
int32_t iPaddingSize;
int32_t iPaddingBitrateStat;
bool bSkipFlag;
int32_t iContinualSkipFrames;
SRCTemporal* pTemporalOverRc;
//for scc
int64_t iAvgCost2Bits;
int64_t iCost2BitsIntra;
int32_t iBaseQp;
long long uiLastTimeStamp;
//for statistics and online adjustments
int32_t iActualBitRate; // TODO: to complete later
float fLatestFrameRate; // TODO: to complete later
} SWelsSvcRc;
typedef void (*PWelsRCPictureInitFunc) (sWelsEncCtx* pCtx,long long uiTimeStamp);
typedef void (*PWelsRCPictureDelayJudgeFunc) (sWelsEncCtx* pCtx,long long uiTimeStamp,int32_t iDidIdx);
typedef void (*PWelsRCPictureInfoUpdateFunc) (sWelsEncCtx* pCtx, int32_t iLayerSize);
typedef void (*PWelsRCMBInfoUpdateFunc) (sWelsEncCtx* pCtx, SMB* pCurMb, int32_t iCostLuma, SSlice* pSlice);
typedef void (*PWelsRCMBInitFunc) (sWelsEncCtx* pCtx, SMB* pCurMb, SSlice* pSlice);
typedef void (*PWelsCheckFrameSkipBasedMaxbrFunc) (sWelsEncCtx* pCtx, const long long uiTimeStamp, int32_t iDidIdx);
typedef void (*PWelsUpdateBufferWhenFrameSkippedFunc)(sWelsEncCtx* pCtx, int32_t iSpatialNum);
typedef void (*PWelsUpdateMaxBrCheckWindowStatusFunc)(sWelsEncCtx* pCtx, int32_t iSpatialNum, const long long uiTimeStamp);
typedef bool (*PWelsRCPostFrameSkippingFunc)(sWelsEncCtx* pCtx, const int32_t iDid, const long long uiTimeStamp);
typedef struct WelsRcFunc_s {
PWelsRCPictureInitFunc pfWelsRcPictureInit;
PWelsRCPictureDelayJudgeFunc pfWelsRcPicDelayJudge;
PWelsRCPictureInfoUpdateFunc pfWelsRcPictureInfoUpdate;
PWelsRCMBInitFunc pfWelsRcMbInit;
PWelsRCMBInfoUpdateFunc pfWelsRcMbInfoUpdate;
PWelsCheckFrameSkipBasedMaxbrFunc pfWelsCheckSkipBasedMaxbr;
PWelsUpdateBufferWhenFrameSkippedFunc pfWelsUpdateBufferWhenSkip;
PWelsUpdateMaxBrCheckWindowStatusFunc pfWelsUpdateMaxBrWindowStatus;
PWelsRCPostFrameSkippingFunc pfWelsRcPostFrameSkipping;
} SWelsRcFunc;
void GomRCInitForOneSlice(SSlice* pSlice, const int32_t kiBitsPerMb);
void CheckFrameSkipBasedMaxbr (sWelsEncCtx* pCtx,const long long uiTimeStamp, int32_t iDidIdx);
void UpdateBufferWhenFrameSkipped(sWelsEncCtx* pCtx, int32_t iSpatialNum);
void UpdateMaxBrCheckWindowStatus(sWelsEncCtx* pCtx, int32_t iSpatialNum, const long long uiTimeStamp);
bool WelsRcPostFrameSkipping(sWelsEncCtx* pCtx, const int32_t iDid, const long long uiTimeStamp);
void WelsRcPostFrameSkippedUpdate (sWelsEncCtx* pCtx, const int32_t iDid);
void RcTraceFrameBits (sWelsEncCtx* pEncCtx, long long uiTimeStamp, int32_t iFrameSize);
void WelsRcInitModule (sWelsEncCtx* pCtx, RC_MODES iRcMode);
void WelsRcInitFuncPointers (sWelsEncCtx* pEncCtx, RC_MODES iRcMode);
void WelsRcFreeMemory (sWelsEncCtx* pCtx);
bool WelsRcCheckFrameStatus (sWelsEncCtx* pEncCtx,long long uiTimeStamp,int32_t iSpatialNum,int32_t iCurDid);
bool WelsUpdateSkipFrameStatus();
long long GetTimestampForRc(const long long uiTimeStamp, const long long uiLastTimeStamp, const float fFrameRate);
}
#endif //RC_H